Passive intelligent well lid for limited space
By controlling the opening and closing order of manhole covers by passive intelligent manhole covers, the problem of failure to comply with ventilation requirements in limited space operations is solved, and the guarantee of safe operations is achieved.
Patent Information
- Application Number
- CN202421666327.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-07-15
AI Technical Summary
In limited space operations, staff fail to strictly abide by the safety requirements of "ventilating first, then testing, and then operating", which poses great safety hazards.
A passive intelligent manhole cover is designed to control the opening and closing order of the manhole cover through an intelligent locking device, so that staff must first open the ventilation cover before opening the main cover to enter the limited space. The locking components of the manhole cover do not require cables or batteries.
Ensure that staff strictly abide by the safety process of "ventilating first, then testing, and then working", reducing safety hazards in limited spaces.
Smart Images
Figure CN223088487U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of safety control, and particularly relates to a passive intelligent well cover for a confined space. Background Art
[0002] A confined space refers to a space that is enclosed or partially enclosed, not designed as a fixed workplace, where personnel can enter for operations, and is prone to the accumulation of toxic, harmful, flammable, and explosive substances or insufficient oxygen content. According to the "Safety Regulations for Confined Space Operations in Industrial and Trade Enterprises" document, confined space operations should strictly comply with the requirements of "ventilate first, detect second, and then operate".
[0003] However, in actual confined space operations, due to possible inadequate supervision, the staff do not strictly comply with the requirements of "ventilate first, detect second, and then operate", and such behavior of the staff has great potential safety hazards. Summary of the Invention
[0004] The purpose of the utility model is to provide a passive intelligent well cover for a confined space, which can solve at least part of the above technical problems.
[0005] The first aspect of the embodiment of the utility model provides a passive intelligent well cover for a confined space, and the intelligent well cover includes:
[0006] A well seat, installed at the opening of the confined space;
[0007] A first cover body, installed on the well seat in a manner that can be opened and closed, and capable of sealing the opening of the confined space; the first cover body is provided with a ventilation opening;
[0008] A second cover body, installed on the first cover body in a manner that can be opened and closed, and capable of sealing the ventilation opening;
[0009] An intelligent locking device, including a first locking component for locking the first cover body, a second locking component for locking the second cover body, and a control system, where the control system is used to control the unlocking and locking of the first locking component and the second locking component;
[0010] Wherein, when both the first locking component and the second locking component are in the locked state, the control system first controls the second locking component to unlock, and then controls the first locking component to unlock; wherein, the first and second locking components are of passive design and do not require laying cables or installing batteries.
[0011] Optionally, after the control system controls the second locking component to unlock for a preset time, the control system then controls the first locking component to unlock.
[0012] Optionally, the control system includes a handheld unit, a first linkage member, and a second linkage member; after the handheld unit obtains information of the second linkage member, the handheld unit can control the second locking assembly to be unlocked or locked and can receive a signal that the second cover is opened;
[0013] After the handheld unit obtains information of the first linkage member and has received a signal that the second cover is opened, the handheld unit can control the first locking assembly to be unlocked or locked.
[0014] Optionally, the handheld unit controlling the second locking assembly to be unlocked or locked includes:
[0015] The handheld unit obtains a unique second identity mark inside the second linkage member by means of mechanical contact or wireless communication, the handheld unit verifies the second identity mark, and after the handheld unit verifies the second identity mark, the handheld unit can operate the second locking assembly to be unlocked or locked.
[0016] Optionally, the handheld unit controlling the first locking assembly to be unlocked or locked includes:
[0017] The handheld unit obtains a unique first identity mark inside the first linkage member by means of mechanical contact or wireless communication, the handheld unit verifies the first identity mark, and after the handheld unit verifies the first identity mark, the handheld unit can operate the first locking assembly to be unlocked or locked.
[0018] Optionally, the first locking assembly includes a first intelligent lock, a first lock rod, and a first lock hole provided on the well seat; the first intelligent lock is installed on the first cover; the first lock rod is connected to the movable end of the first intelligent lock; the control system controls the first lock rod to extend out or retract into the first lock hole by controlling the on-off of the current of the first intelligent lock.
[0019] Optionally, when the first intelligent lock is powered on, the first intelligent lock controls the first lock rod to extend out of the first lock hole; when the first intelligent lock is powered off, the first intelligent lock controls the first lock rod to retract into the first lock hole.
[0020] Optionally, the second locking assembly includes a second intelligent lock, a second lock rod, and a second lock hole provided on the first cover; the second lock rod is connected to the movable end of the second intelligent lock; the control system controls the second lock rod to extend out or retract into the second lock hole by controlling the on-off of the current of the second intelligent lock.
[0021] Optionally, when the second intelligent lock is powered on, the second intelligent lock controls the second lock rod to extend out of the second lock hole; when the second intelligent lock is powered off, the second intelligent lock controls the second lock rod to retract into the second lock hole.
[0022] Optionally, the first cover body is rotatably connected to the well seat through a first pin shaft;
[0023] And / or, the second cover body is rotatably connected to the first cover body through a second pin shaft.
[0024] The main technical effect achieved by the embodiment of the present invention is that: for the intelligent manhole cover in the present invention, the first cover body can be opened to facilitate the staff to enter the confined space only after the second cover body is opened for ventilation, so that the staff strictly abide by the safety requirements of "ventilate first, then detect, and then operate", and the staff can avoid potential safety hazards in the confined space. Description of the Drawings
[0025] Figure 1 is a schematic structural diagram of a passive intelligent manhole cover for a confined space in an embodiment of the present invention (both the first cover body and the second cover body are closed);
[0026] Figure 2 is Figure 1 explosion schematic diagram;
[0027] Figure 3 is a schematic structural diagram of the second cover body of a passive intelligent manhole cover for a confined space in an embodiment of the present invention being opened;
[0028] Figure 4 is a schematic structural diagram of the first cover body of a passive intelligent manhole cover for a confined space in an embodiment of the present invention being opened.
[0029] Description of the reference numerals: 1, well seat; 2, first cover body; 3, second cover body; 4, first locking assembly; 5, second locking assembly; 6, first linkage; 7, second linkage; 40, first intelligent lock; 41, first lock rod; 42, first lock hole; 50, second intelligent lock; 51, second lock rod; 8, first pin shaft; 9, second pin shaft; 21, ventilation opening. Detailed Description of the Embodiment
[0030] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The manners described in the following exemplary embodiments do not represent all manners consistent with the present invention. On the contrary, they are merely examples of devices consistent with some aspects of the present invention as detailed in the appended claims.
[0031] The terms used in the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. Unless otherwise defined, the technical terms or scientific terms used in the present utility model shall have the ordinary meanings understood by those of ordinary skill in the field to which the present utility model pertains. The terms "first", "second" and similar words used in the specification and claims of the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not denote a quantity limitation, but mean that there is at least one, and will be separately stated if only referring to "one". "Plurality" or "several" means two or more. Unless otherwise indicated, words such as "front part", "rear part", "lower part" and / or "upper part" are only for convenience of description and are not limited to one position or a spatial orientation. Words such as "comprising" or "including" mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect. The singular forms of "a", "the" and "said" used in the specification and appended claims of the present utility model are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any and all possible combinations of one or more of the associated listed items.
[0032] As Figure 1 and Figure 2 shown, the first aspect of the embodiment of the present utility model provides a passive intelligent manhole cover for a confined space. The intelligent manhole cover includes a manhole seat 1, a first cover body 2, a second cover body 3 and an intelligent locking device.
[0033] The manhole seat 1 is installed at the opening of the confined space.
[0034] The first cover body 2, i.e., the large cover body, is installed on the manhole seat 1 in an openable and closable manner and can seal the opening of the confined space; the first cover body 2 in the present utility model is installed on the manhole seat 1 in a rotatable manner through a first pin shaft 8. Specifically, two laterally extending rotation holes are provided on the manhole seat 1, and the first cover body 2 is rotationally connected to the two rotation holes through the first pin shaft 8. Of course, in other embodiments, the first cover body 2 can also be detachably connected to the manhole seat 1, that is, when it is necessary to seal the opening of the confined space, the first cover body 2 is installed on the manhole seat 1, and when the staff needs to enter the confined space for operation, the first cover body 2 can be detached, and the present utility model does not limit this.
[0035] The first cover body 2 is provided with a ventilation opening 21; the second cover body 3, i.e., the small cover body, is installed on the first cover body 2 in a manner that can be opened and closed and can seal the ventilation opening 21; in the present utility model, the second cover body 3 is installed on the first cover body 2 in a rotatable manner through a second pin shaft 9. Considering that the structure of the second cover body 3 rotatably installed on the first cover body 2 is the same as the structure of the first cover body 2 rotatably installed on the well seat 1, it will not be elaborated here. Of course, in other embodiments, the second cover body 3 can also be installed on the first cover body 2 in a detachable manner.
[0036] The intelligent locking device includes a first locking component 4 for locking the first cover body 2, a second locking component 5 for locking the second cover body 3, and a control system for controlling the unlocking and locking of the first locking component 4 and the second locking component 5; wherein, when both the first locking component 4 and the second locking component 5 are in the locked state, the control system first controls the second locking component 5 to unlock and then controls the first locking component 4 to unlock.
[0037] By setting like this, in the intelligent manhole cover of the present utility model, the second cover body 3 needs to be opened for ventilation first, and then the first cover body 2 can be opened to facilitate the staff to enter the confined space, so that the staff strictly abide by the safety requirements of "ventilate first, detect then, and work later", and the staff can avoid potential safety hazards in the confined space.
[0038] As an optional embodiment, after the control system controls the second locking component 5 to unlock for a preset time, the control system then controls the first locking component 4 to unlock. Among them, the preset time can be two minutes, five minutes, ten minutes or longer. The longer the preset time is, the longer the ventilation time is, and the safer the environment in the confined space is, thus greatly ensuring the operation safety of the staff. Among them, the preset time is strictly matched according to the actual characteristics of the confined space and is generally not less than 30 minutes to ensure the operation safety of the staff.
[0039] Among them, the first and second locking components are passive designs and do not require laying cables or installing batteries.
[0040] As an alternative embodiment, the first locking assembly 4 includes a first intelligent lock 40, a first locking rod 41, and a first lock hole 42 provided on the well seat 1; the first intelligent lock 40 is installed on the first cover 2; the first locking rod 41 is connected to the movable end of the first intelligent lock 40; the control system controls the on-off of the current of the first intelligent lock 40, and the control system controls the locking device of the first intelligent lock 40, so as to control the first locking rod 41 to extend into or retract from the first lock hole 42. By controlling the on-off of the current of the first intelligent lock 40 in the present invention, the locking device of the intelligent lock 40 is released, that is, the first locking rod 41 can be controlled to extend into or retract from the first lock hole 42, with a simple structure and convenient implementation. Of course, in other embodiments, the first locking assembly 4 can also drive the first locking rod 41 to extend into and retract from the first lock hole 42 by a motor, and the present invention does not limit this.
[0041] As an alternative embodiment, the second locking assembly 5 includes a second intelligent lock 50, a second locking rod 51, and a second lock hole provided on the well seat 1; the second intelligent lock 50 is installed on the second cover 3; the second locking rod 51 is connected to the movable end of the second intelligent lock 50; the control system controls the on-off of the current of the second intelligent lock 50, so as to control the second locking rod 51 to extend into or retract from the second lock hole. By controlling the on-off of the current of the second intelligent lock 50 in the present invention, the second locking rod 51 can be controlled to extend into or retract from the second lock hole, with a simple structure and convenient implementation. Of course, in other embodiments, the second locking assembly 5 can also drive the second locking rod 51 to extend into and retract from the second lock hole by a motor, and the present invention does not limit this.
[0042] To facilitate the operation of the first intelligent lock 40 and the second intelligent lock 50, the first linkage 6 in the present invention is installed on the first intelligent lock 40, and the second linkage 7 is installed on the second intelligent lock 50; of course, in other embodiments, the first linkage 6 and the second linkage 7 in the present invention can also be installed at other positions, and the present invention does not limit this.
[0043] As an alternative embodiment, the control system includes a handheld device, a first linkage 6, and a second linkage 7; when the handheld device obtains the information of the second linkage 7, the handheld device can control the second locking assembly 5 to be unlocked or locked and can receive the signal of the opening of the second cover 3;
[0044] When the handheld device obtains the information of the first linkage 6 and has received the signal of the opening of the second cover 3, the handheld device can control the first locking assembly 4 to be unlocked or locked.
[0045] Specifically, the handheld device controls the second locking assembly 5 to be unlocked or locked, including:
[0046] The handheld device obtains the unique second identity mark inside the second linkage member 7 through mechanical contact or wireless communication. The handheld device verifies the second identity mark. When the verification of the second identity mark by the handheld device is passed, the handheld device can operate the second locking component 5 to achieve unlocking or locking.
[0047] Specifically, the handheld device controls the first locking component 4 to achieve unlocking or locking, including:
[0048] The handheld device obtains the unique first identity mark inside the first linkage member 6 through mechanical contact or wireless communication. The handheld device verifies the first identity mark. When the verification of the first identity mark by the handheld device is passed, the handheld device can operate the first locking component 4 to achieve unlocking or locking.
[0049] Such as Figure 3 and Figure 4 shown, the steps for opening the intelligent manhole cover are as follows:
[0050] Such as Figure 3 shown, the handheld device obtains the unique identity mark inside the second linkage member 7 of the second cover body 3 through mechanical contact or wireless communication. The handheld device verifies the identity. If the verification is passed, the handheld device can operate the second locking component 5. The second lock rod 51 of the second locking component 5 withdraws from the second lock hole on the side of the first manhole cover, and the second cover body 3 can be opened. The handheld device obtains the opened state of the second cover body 3 through mechanical contact or wireless communication.
[0051] Such as Figure 4 shown, after the second cover body 3 is opened and ventilated for a period of time, the first cover body 2 can be opened. The handheld device obtains the unique identity mark inside the first linkage member 6 of the first cover body 2 through mechanical contact or wireless communication. The handheld device verifies the identity. If the verification is passed, the handheld device can operate the first locking component 4. The first lock rod 41 of the first locking component 4 withdraws from the first lock hole 42 on the side of the manhole seat 1, and the first cover body 2 can be opened. When the first cover body 2 is opened, the operator can enter the limited space below the intelligent manhole cover for operation.
[0052] In case of emergency, the universal handheld device can directly operate the first locking component 4 without verifying the identity and directly authorize the operation of the first linkage member 6 to make the first lock rod 41 extend or retract from the first lock hole 42.
[0053] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A passive intelligent manhole cover for a confined space, characterized in that, The intelligent manhole cover includes: A manhole base installed at the opening of the limited space; A first cover body installed on the manhole base in an openable and closable manner and capable of sealing the opening of the limited space; the first cover body is provided with a ventilation opening; A second cover body installed on the first cover body in an openable and closable manner and capable of sealing the ventilation opening; An intelligent locking device, including a first locking component for locking the first cover body, a second locking component for locking the second cover body, and a control system for controlling the unlocking and locking of the first locking component and the second locking component; Wherein, when both the first locking component and the second locking component are in the locked state, the control system first controls the second locking component to unlock, and then controls the first locking component to unlock.
2. The passive intelligent manhole cover for a confined space according to claim 1, characterized in that, After the control system first controls the second locking component to unlock for a preset time, the control system then controls the first locking component to unlock; wherein, the first and second locking components are passive designs and do not require laying cables or installing batteries.
3. The passive intelligent manhole cover for a confined space according to claim 1 or 2, characterized in that, The control system includes a handheld device, a first linkage member, and a second linkage member; when the handheld device obtains the information of the second linkage member, the handheld device can control the second locking component to unlock or lock and can receive the signal that the second cover body is opened; When the handheld device obtains the information of the first linkage member and has received the signal that the second cover body is opened, the handheld device can control the first locking component to unlock or lock.
4. The passive intelligent manhole cover for a confined space according to claim 3, wherein, The handheld device controls the second locking component to unlock or lock, including: The handheld device obtains the unique second identity mark inside the second linkage member through mechanical contact or wireless communication, and the handheld device verifies the second identity mark. When the handheld device verifies the second identity mark successfully, the handheld device can operate the second locking component to unlock or lock.
5. The passive intelligent manhole cover for a confined space according to claim 4, characterized in that, The handheld device controls the first locking component to unlock or lock, including: The handheld device obtains the unique first identity mark inside the first linkage member through mechanical contact or wireless communication, and the handheld device verifies the first identity mark. When the handheld device verifies the first identity mark successfully, the handheld device can operate the first locking component to unlock or lock.
6. The passive intelligent manhole cover for confined spaces according to claim 1 or 2, characterized in that, The first locking component includes a first intelligent lock, a first lock rod, and a first lock hole provided on the manhole base; the first intelligent lock is installed on the first cover body; the first lock rod is connected to the movable end of the first intelligent lock; the control system controls the extension or retraction of the first lock rod into the first lock hole by controlling the on-off of the current of the first intelligent lock.
7. The passive intelligent manhole cover for a confined space according to claim 6, wherein, When the first intelligent lock is powered on, the first intelligent lock controls the first lock rod to extend out of the first lock hole; when the first intelligent lock is powered off, the first intelligent lock controls the first lock rod to retract into the first lock hole.
8. The passive intelligent manhole cover for a confined space according to claim 1 or 2, characterized in that, The second locking component includes a second intelligent lock, a second lock rod, and a second lock hole provided on the first cover body; the second intelligent lock is installed on the second cover body, and the second lock rod is connected to the movable end of the second intelligent lock; the control system controls the extension or retraction of the second lock rod into or out of the second lock hole by controlling the on-off of the current of the second intelligent lock.
9. The passive intelligent manhole cover for a confined space according to claim 8, characterized in that, When the second intelligent lock is powered on, the second intelligent lock controls the second lock rod to extend out of the second lock hole; when the second intelligent lock is powered off, the second intelligent lock controls the second lock rod to retract into the second lock hole.
10. The passive intelligent manhole cover for confined space according to claim 1, characterized in that, The first cover body is rotatably connected to the well seat through a first pin shaft; and / or, the second cover body is rotatably connected to the first cover body through a second pin shaft.